Big Evolution Pill (SR04-EN023) - Structure Deck: Dinosmasher's Fury Unlimited

After this card's activation, it remains on the field, but destroy it during your opponent's 3rd End Phase. Tribute 1 Dinosaur-Type monster to activate this card; while this card is face-up on the field, you can Normal Summon Level 5 or higher Dinosaur-Type monsters without Tributing.